engine accessories · 2017. 11. 7. · ref. part number description 37 738-04420 shoulder spacer,...
TRANSCRIPT
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MTD LLC, P.O. BOX 361131 CLEVELAND, OHIO 44136-0019
Printed In USA
Illustrated Parts Manual
50” Hydrostatic Lawn Tractor, 900 Series
Form No. 769-06782 December 16, 2010
-
2
0637 Black
0709 Dark Green (Bolens, Yard-Man)
0662 Oyster Gray (MTD Gold)
0638 Red (Yard Machines, Huskee, Troy-Bilt, MTD)
0691 Black Jack (MTD Gold, MasterCut)
0674 Yellow (Yard-Man)
0650 Metallic Red (White Outdoor)
0629 Silver Flake (MTD Platinum)
04038 Day Orange (Daedong)
04033 Flint Mica (Troy-Bilt XP)
Thank you for purchasing an MTD Lawn Tractor. It was carefully engineered to provide excellent performance when properly operated and maintained.
All information in this manual is relative to the most recent product information available at the time of printing. Please be aware that this Illustrated Part’s Manual may cover a range of product specifications for various models.
Components listed and/or illustrated in this manual may not be applicable to all models. We reserve the right to change product specifications, designs and equipment without notice and without incurring obligation.
Throughout this manual, all references to right (RH) and left (LH) are observed from the operating position.
Axle, Front ................................................................ 6Battery ...................................................................... 4Choke Control, 5 Style ............................................14Dash Panel, 5 Style .................................................14Dash Panel, K Style .................................................16Deck Lift Handle/Linkage ....................................... 8Drive System ...........................................................10Electrical Schematic ...............................................18Engine Accessories .................................................. 3Fender ...................................................................... 8Frame ....................................................................... 4Fuel Tank, 5 Style ....................................................14Fuel Tank, K Style ....................................................16Head Lamps, 5 Style ...............................................14Head Lamps, K Style ...............................................16Hood, 5 Style ..........................................................14Hood, K Style ...........................................................16
Meter, Systems Indicator, 5 Style ..........................14Meter, Systems Indicator, K Style ..........................16Mower Deck, 50-inch .............................................12Muffler ...................................................................... 3Pedal Controls ........................................................10PTO Pulley ................................................................ 4PTO Switch, 5 Style .................................................14PTO Switch, K Style .................................................16Seat ........................................................................... 8Solenoid ................................................................... 4Steering Wheel ........................................................ 6Switches, Interlock .................................................. 4Throttle Control, 5 Style .........................................14Throttle/Choke Control, K Style ............................16Wheels, Front ........................................................... 6Wheels, Rear ...........................................................10
Table of Contents
Record Product InformationTo ease in ordering replacement parts, please locate the model plate on the equipment and record the information in the provided area to the right. You can locate the model plate by looking beneath the seat.
Model nuMber
serIal nuMber
Painted PartsWhen ordering painted service parts, a four digit color suffix must be added to the part number (e.g. 783-XXXXX-0637). Please refer to the table below for current color codes:
To The Owner
-
3
A
A7
8
16
12
8
4
4
11
23
9
1410
15
13
5
1
17
6
18
Ref. Part Number Description
1 683-04549 Mulffler Shield Assembly
2 710-0227 Screw, Indented Washer, #8-18:0.500
3 710-04683 Taptite Screw, 3/8-16:1.000
4 710-0599 Taptite Screw, 1/4-20:0.500
5 710-1314A Socket Head Screw, 5/16-18:.750
6 712-0271 Sems Nut, 1/4-20
7 783-06378A Heat Shield
8 KH-24-041-49-S Exhaust Gasket
9 725-0157 Cable Tie, 3/16 x .05 x 7.4
10 726-0205 Hose Clamp, .490 DIA.
Ref. Part Number Description
11 728-04000† Rivet, .188 DIA x .300 L
12 751-3141-14 Oil Drain Extension Hose
13 751-0564B† Muffler Deflector
14 751-10349 Fuel Hose
15 751-10353 Long Muffler Deflector
751-11053 Long Muffler Deflector, EPA
16 951-10517A Oil Drain
17 751-10528A Muffler Deflector
18 751-12089-28† Hose Vent
Engine Accessories
† If Equipped
-
4
2224
23
14
2521
6
7 19
5
24
18
1518
17
16
13
26
3
119
8 10
20
28
12
27
29
PTO and Battery
-
5
Ref. Part Number Description
1 710-04379A Hex Head Screw, 7/16-20:3.50
2 917-04174A Electric PTO Clutch
3 725-0157 Cable Tie, 3/16 x .05 x 7.4
4 936-0171 Lock Washer, 7/16
5 736-0277 Flat Washer, 1.031 x 1.620 x .095
6 683-04469B Frame
7 756-0978B Electric PTO Engine Pulley
8 710-04484 Taptite Screw, 5/16-18:.750
9 710-3005 Hex Head Screw, 3/8-16:1.25
10 712-04065 Flangelock Nut, 3/8-16
11 738-04058 Shoulder Spacer, .38 x 1.0 x .70
12 747-04121A Battery Holder Rod
13 783-0349 Battery Tray
14 783-06089 Seat Frame Bracket
15 683-04219B Bumper
16 912-3000 Hexlock Nut, 3/8-16
17 731-05674 Bumper Cap
18 738-0143 Shoulder Bolt, .496 x .336
19 714-04061 Quick Release Pin
20 925-1707D Battery
21 725-04363 Interlock Switch
22 710-0653 Taptite Screw, 1/4-20:0.375
23 712-04064 Flangelock Nut, 1/4-20
24 725-04439 Solenoid, 12 V
25 738-04237A Shoulder Screw, #10-32:.500
26 747-05195 Belt Keeper Rod
27 710-04666 Hex Head Flange, 1/4-20:.75
28 712-0271 Sems Nut, 1/4-20
29 732-0814 Spr, Extn, .56 Dia X 5.52
— 925-04104 Wire harness, Main
PTO and Battery
-
6
Steering and Axle
9
59 6
12
7
4
26
6
29
12
2530
24
28729
25
31
37
41
38
40
36
3534
2322
24
30
26
26
15
21
27
36
35
34
18811
14
20
10
7
39
2
19
16
32
33
133
171
-
7
Ref. Part Number Description
1 710-04095 Hex Head Screw, 3/8-16:1.00
2 710-0514 Hex Head Screw, 3/8-16:1.00
3 710-0643 Hex Head Screw, 5/16-18:1.00
4 711-04998 LH Drag Link
5 711-04999 RH Drag Link
6 912-0240 Jam Nut, 7/16-20
7 712-04065 Flangelock Nut, 3/8-16
8 712-0459 Flangelock Nut, 7/16-20
9 712-3004A Flangelock Nut, 5/16-18
10 717-1550F Steering Gear
11 717-1554 Steering Pinion Gear
12 923-0448A Ball Joint, 7/16-20
13 936-3004 Flat Washer, .406 x .875 x .105
14 736-3084 Flat Washer, .51 x 1.12 x .06:HT
15 638-04036P RH Axle Assembly
16 738-04263 Steering Shaft, .625 OD x 24.25 LG
17 738-04363 Shoulder Spacer, .385X 1.25 x .3025
18 738-04364B Spacer, .38 x 1.375
19 741-04237B Hex Flange Bearing 5/8 PM
20 783-06043 Steering Support Bracket
21 638-04037P LH Axle Assembly
22 710-0395 Hex Head Screw, 5/16-18:2.25
23 710-0859 Hex Head Screw, 3/8-16:2.50
24 710-3180 Hex Head Screw, 5/16-18:1.75
Ref. Part Number Description
25 912-0214 Hexlock Nut, 3/8-24
26 712-04063 Flangelock Nut, 5/16-18
27 714-0162 Cotter Pin, 5/32:1.25
28 719-04413A Pivot Bar Axle
29 748-04065 Steering Block
30 748-04068 Spacer, .71 ID x .125 OD x .56LG
31 750-05280 Spacer, .385 x 1.00 x 1.5075
32 631-04028 Steering Wheel, 5 Style
— 631-04008A Steering Wheel, Export
33 731-04040 Steering Wheel Cap, 5 Style
— 731-04039 Steering Wheel Cap, K Style
— 731-04681 Steering Wheel Cap, TB
34 731-08049 Bumper Cap
35 736-04228A Flat Washer, .781ID x 1.590OD
36 634-04406 Wheel Assembly, 5 Style
— 634-04466 Wheel Assembly, Export
37 634-04405 Rim Assembly, 5 Style
— 934-04082 Rim Assembly, Export
38 734-1731 Tire, 5 Style
— 734-1727 Tire, Export
39 934-0255 Tubeless Air Valve
40 741-0516B Flange Bearing, .760 x 1.00 x 1.20LG
41 741-0990B Flange Bearing, .760ID
Steering and Axle
-
8
Seat and Fender
24
21
17
3036
34
31
28
42
41
40
32
17
393733
17
27
35
29
19 18
38
126
34
24
10
19
14
16
3
223
117
813
5
15
20
26
25
22
Models with seat adjustment lever
-
9
Ref. Part Number Description
1 683-04223 Lift Shaft Assembly
2 712-04063 Flangelock Nut, 5/16-18
3 712-04065 Flangelock Nut, 3/8-16
4 914-0104 Cotter Pin, .072 DIA. x 1.13 LG
5 714-04040 Bow-Tie Cotter Pin
6 716-0106A E-Ring, .625 DIA. SHAFT
7 720-0311 Handle Grip
8 732-0874 Torsion Spring
9 736-0105 Spring Washer, .401 x .870 x .063
10 738-0138A Shoulder Screw, .437 x .470:5/16-18
11 938-0380 Shoulder Bolt, .500 x .270:3/8-16
12 941-0225 Hex Flange Bearing
13 946-04436 Lift Cable, 16.64 LG
14 747-04962A Lift Handle
15 756-04331 Pulley Roller Cable
16 783-05546A Lift Arm
17 710-04484 Taptite Screw, Lock Washer, 5/16-18
18 710-0599 Taptite Screw, Lock Washer, 1/4-20
19 710-0895 Hi-Lo Screw, Lock Washer, 1/4-15
20 710-1260A Taptite Screw, 5/16-18:.750
21 731-06795 Lift Lever Cover
22 731-1993A Cover with Cup Holder
Ref. Part Number Description
23 736-3078 Flat Washer, .344 x 1.00 x .063 HDN
24 783-06259 Fender
25 726-3046 Ratchet Clip
26 735-04138 LH Foot Pad
27 735-04158 RH Foot Pad
28 757-04086 Seat
29 712-3004A Flangelock Nut, 5/16-18
30 720-04061 Knob
31 725-0157 Cable Tie, 3/16 x .05 x 7.4
32 732-04849 Compression Spring, 1.50 x 3.90 x .200
33 938-0296 Shoulder Screw, .437 x .268:5/16-18
34 783-06049 Seat Mounting Bracket
35 783-06088 Seat Pivot Bracket
36 783-06266 Knob Adjust Bracket
37 783-06448 Switch Retainer Clip
38 783-06548 Lift Bracket, 5 Style
— 783-06181 Lift Bracket, Export
39 925-05013 Seat Switch
40 710-04482 Hex Head Flange, 3/8-16:.875
41 732-04563 Compression Spring, .68 x 1.065 x .055
42 783-06050 Seat Adjustment Lever
Seat and Fender
-
10
Drive and Rear Wheels
66
65
4130
7 241
2214 27
38
36
8
64
55 52
6
58
40
30
1
16
119 44
43
1237 39
31
16
46
4649 5
45 2868
69
67 23
3213
4210 47
26
1042
18
6
15
2517
320
1629
450342119
16
6
48
22
33
5960
61
35
53
6
5660
62
5163
66
2
57
54
53
7071
72
-
11
Ref. Part Number Description
1 918-04228 Wheel Hub Assembly
2 918-04270B Hydro Transmission
3 710-0176 Hex Head Screw, 5/16-18:2.75
4 710-0227 Screw, Indented Washer, #8-18:0.500
5 710-0351 Screw, #10-16:0.500
6 710-04484 Taptite Screw, 5/16-18:.750
7 710-0627 Hex Head Screw, 5/16-24:.750
8 710-0653 Taptite Screw, 1/4-20:0.375
9 710-1007 Taptite Sems Screw, :3/8-16:1.500
10 710-1325 Taptite Screw, 1/4-20:1.625
11 710-3011 Hex Head Screw, 3/8-16:2.25
12 912-0240 Jam Nut, 7/16-20
13 912-0346 Jamlock Nut, 1/2-20
14 712-04063 Flangelock Nut, 5/16-18
15 912-0431 Flangelock Nut, 3/8-16
16 914-0111 Cotter Pin, 3/32:1.0
17 725-0157 Cable Tie. 3/16 x .05 x 7.4
18 725-04791A Jumper Harness
19 725-1644 Short Spring Switch
20 926-0154 Push Mount Cable Tie 7.5 LG
21 926-0320 Insulator Nut Plate
22 731-05300A Sleeve, .765 ID x 1.500 LG
23 731-06098 Hydro Fan
24 932-0209 Extension Spring, .48 OD x 2.03
25 732-04606 Extension Spring, .500 DIA x 12.6 LG
26 732-04792 Extension Spring, 1.00 DIA x 4.75
27 732-0716D Extension Spring, .59 OD x 4.00 LG
28 732-0729 Wire Ring
29 732-3118 Extension Spring, .375 OD x 1.44 LG
30 736-0242 Bell Washer, .340 x .872 x .060
31 936-0264 Flat Washer, .330 x .630 x .0635
32 736-04263 Lock Washer
33 936-3008 Flat Washer, .344 x .750 x .120
34 736-3010 Flat Washer, .407 x .812 x .135
35 647-04152B Brake Control Assembly
36 683-04537 Hydro Pedal Bracket Assembly
Ref. Part Number Description
37 738-04420 Shoulder Spacer, 1.375 x .380 x .183
38 747-04139 Brake Rod
39 747-04957A Footpedal Bypass Transmission Rod
40 747-04979 Hydro Control Rod
41 747-04991 Hydro Bypass Rod
42 750-04456 Spacer, 260 x .372 x 1.420 LG
43 954-04207 V-Belt, 4L x 78.9 POLY
44 756-04224 Flat Idler Pulley, 2.75 OD
45 756-04308 Input Pulley, 4.13 DIA
46 756-04325 V Idler Pulley, x 3.06
47 783-06027A Center Idler Bracket
48 783-06133 Hydro Mounting Bracket
49 783-06260 Belt Disengage Support Bracket
50 783-1019B Switch Actuator Bracket
51 710-0604A Taptite Screw, 5/16-18:0.625
52 711-05068 Clevis Pin, 5/16 x 3.985
53 712-04065 Flangelock Nut, 3/8-16
54 714-04040 Bow-Tie Cotter Pin
55 719-0584B Control Pedal
56 726-0214 Push Cap
57 732-04587 Extension Spring, .63 DIA x 4.95 LG
58 735-04136 Brake Pedal Pad
59 938-0380 Shoulder Bolt, .500 x .270:3/8-16
60 741-0495 Flange Bearing, .630 ID x .695 OD x .60
61 748-04203 Cruise Latch
62 783-05914 Pedal Support Bracket
63 783-05940 Pedal Support Bracket, 5/8
64 783-06103A Brake Pedal Bracket
65 712-3050 Lug Nut
66 634-04210 Wheel Assembly
67 934-0255 Tubeless Air Valve
68 734-04174 Tire
69 634-04238 Rim Assembly
70 738-0430 Scr, Shldr, .50 x .685 3/8-16
71 936-0344 Washer, Flat, .385 x 1.0 x .030
72 747-05444 Belt Keeper Rod
Drive and Rear Wheels
-
12
50” Deck
193844
14
1732
42
10
2822
29
51
16
4
2335
52
10
18
43
517
13 3620
7
4033
173927
2417
178
110
47 3025
25
2
24
46
31
1715
4526
34 93 30
47
4937
6
55
17
49
63
5961
60
57
615962
58
376
48
8
54
532 18
56
8
1141
37
2
2
39 3620
1221
50
65
6445
7
17
16 16
-
13
Ref. Part Number Description
1 96606 Hook Retainer Bracket
2 918-04125B Pulley Spindle Assembly, 5.39
3 683-0254B Deck Hanger Bracket Assembly
4 983-04645 Deck Assembly
5 703-3279 Chute Deflector Stop
6 710-0347 Hex Screw, 3/8-16:1.75
7 710-04095 Hex Screw, 3/8-16:1.00
8 710-04484 Taptite Screw, 5/16-18:.750
9 710-0528 Hex Screw, 5/16-18:1.25
10 710-0599 Taptite Screw, 1/4-20:0.500
11 710-3005 Hex Screw, 3/8-16:1.25
12 710-3103 Hex Screw, 5/16-18:2.0
13 710-3178 Carriage Bolt, 3/8-16:0.75
14 911-3314 Roller Pin, 1/2 DIA x 7.31 LG
15 712-0229 Push Nut, 3/8
16 712-04063 Flangelock Nut, 5/16-18
17 712-04065 Flangelock Nut, 3/8-16
18 712-0417A Flange Nut, 5/8-18
19 712-04243 Flexlock Nut, 1/2-13
20 912-0641 Hex Nut, M16-1.5 DIN 936
21 912-3010 Hex Nut, 5/16-18:GR5
22 914-0111 Cotter Pin, 3/32:1.0
23 753-04070 Lynch Pin, .1875
24 703-3511A Finger Guard
25 914-0470 Cotter Pin, 1/8 x 1.25
26 917-04074 Deck Adjustment Gear
27 921-04041 Water Nozzle Adaptor
28 731-05679 Front Roller
29 732-0459C Extension Spring, .94 DIA. x 6.74 LG
30 732-04652 Compression Spring, .535 OD x 1.751 LG
31 732-0934 Extension Spring, 1.15 OD x 5.99 LG
32 734-04155 Front Deck Wheel
33 734-0973 Rear Deck Wheel
Ref. Part Number Description
34 936-0119 Lock Washer, 5/16
35 936-0179 Flat Washer, .531 x 1.25 x .100
36 736-0225 Lock Washer, 5/8
37 936-0300 Flat Washer, .406 x .875 x .059
38 736-0317 Bell Washer, .63 x 1.25 x .18
39 737-04003D Water Nozzle
40 938-0373 Shoulder Bolt, .496 x 1.525:3/8-16
41 738-04162A Shoulder Spacer, .8840 x .190
42 938-3056 Shoulder Bolt, .496 x 2.50:3/8-16
43 942-04053C Blade
44 747-05067A Front Deck Lift Rod
45 631-04070A Chute Assembly
— 631-04092B Chute Assembly, Export
46 747-05462 Deck Sway Rod
47 747-1116 Deck Release Handle Rod
48 954-04077 V Belt
49 756-04129B Idler Pulley, 4.25"DIA
50 783-05030 Chute Bracket
51 783-04414A Center Skirt
52 783-04415 RH Skirt
53 783-05280 LH Belt Cover
54 783-05281 RH Belt Cover
55 783-05030 Idler Bracket
56 736-0315 Flat Washer, .760 x 1.50 x .120
57 937-3000 Lube Fitting
58 738-1010A Spindle Shaft
59 941-0919 Ball Bearing, .787ID x 1.85
60 748-0160A Spacer, .790 ID x 1.25 OD x .175
61 750-1000 Spacer, .80 x 1.10 x 1.322
62 750-1349A Spacer, .79 x 1.82 x .55
63 756-04216 Deck Pulley
64 711-04565 Hinge Pin
65 732-04372 Torsion Spring
50” Deck
-
14
Hood and Dash, 5 Style
5
1
2932
25
4
26
3031
7
911
3
86
10
12
2
13
15
14
20
21
22
23
15
2728
33
17
18
16
19
24
1
-
15
Ref. Part Number Description
1 710-04484 Taptite Screw ,5/16-18:.750
2 710-0599 Taptite Screw ,1/4-20:0.500
3 710-0895 Hi-Lo Screw, 1/4-15:0.750
4 710-1017 Screw, 1/4-14:0.625
5 710-1611B Taptite Screw ,5/16-18:0.750
6 714-04040 Bow Tie Cotter Pin
7 731-06169 Dash Panel
8 731-06639 Dash Lever
9 731-06642 Cruise Cover
10 747-05008 Control Rod
11 747-1196 Lever
12 783-04285F RH Support Plate
13 783-04323F LH Support Plate
14 783-05685 Grill
15 710-04593 Taptite Screw ,5/16-18:0.375
16 710-0751 Hex Screw, 1/4-20:.620
17 712-04064 Flangelock Nut, 1/4-20
18 731-04949A Grill Lens
19 731-05522A Hood Scoop
20 738-04091A Shoulder Screw, .43X.29:5/16-18
21 783-05454 Hood Pivot Bracket
22 783-05683 Hood
23 751-0603A Fuel Cap
24 751-0658E Fuel Tank
25 946-04541 Throttle Control
26 946-04132 Choke Control
27 925-0963 Lamp
28 925-1649 Lamp Socket
29 925-04227B Key Switch
30 925-04036C Hour Meter
31 925-04174 Electric PTO Switch
32 925-1745A Key
33 731-05165A Plenum
Hood and Dash, 5 Style
-
16
Hood and Dash, K Style
A
20
3
1412
10
22
30
6
2
33
18
113231
1
16
23
17
27
21
2
244
25
78
19
295
28
9
13
26
A
34
15
35
36
-
17
Ref. Part Number Description
1 731-06168 Dash Assembly
2 710-0599 Taptite Screw ,1/4-20:0.500
3 710-0607 Taptite Screw, 5/16-18:0.500
4 710-0895 Hi-Lo Screw, 1/4-15:0.750
5 710-1017 Screw, 1/4-14:0.625
6 710-1611B Taptite Screw ,5/16-18:0.750
7 714-04040 Bow Tie Cotter Pin
8 731-06639 Dash Lever
9 731-06642 Cruise Cover
10 732-04580 Extension Spring, .500 DIA x 2.733 LG
11 735-0271A Bumper
12 747-05008 Control Rod
13 747-1196 Lever
14 783-04285F RH Support Plate
15 783-04323F LH Support Plate
16 710-0642 Taptite Screw, 1/4-20:0.750
17 683-04441 Hood Assembly
18 710-05108 Screw, 1/4 DIA:.750
19 731-06095 LH Lens
20 731-06096 RH Lens
21 631-04272 Grill
22 747-04161 LH Tank Support Rod
23 747-04946 RH Tank Support Rod
24 951-12182 Fuel Cap, EPA
25 951-04309 Fuel Tank, w/ rollover valve
26 925-0963 Lamp
27 925-1649 Lamp Socket
28 731-1999 Choke Plug
29 946-04542 Throttle/Choke Cable
30 925-04230B Key Switch Module
31 925-04036C Hour Meter
32 925-04174 Electric PTO Switch
33 925-1745A Key
34 731-06194A Hood Scoop
35 735-04081 Grommet, Rubber, 23.0 ID
36 751-12118 Valve, Rollover Grommet
— 931-06212 Plenum (Not Shown)
Hood and Dash, K Style
-
18
Electrical Schematic
-
Notes
19
-
MTD LLC, P.O. BOX 361131 CLEVELAND, OHIO 44136-0019
To order replacement parts or locate your nearest service dealer call a Customer Support at (800) 800-7310.or visit www.mtdproducts.com to find the nearest authorized dealer in your area.